The number of people to have died in the worst Ebola outbreak in history has risen to at least 932, the World Health Organization said on Wednesday, as overworked hospital staff struggled to quell the epidemic and in many cases became its front-line victims. (Ebola virus: Outbreak is a public health emergency).

Between Saturday and Monday, 45 people died of the disease in West Africa, with 108 new cases reported during that period, the WHO said as it began a two-day emergency meeting in Geneva to determine whether the...